US 12 over Creek Twin Canyon
GoodLewis County, Washington · 2.6 E JCT SR 122 · Structure no. 0007973B0000000
- Built
- 1967
- 58 years old
- Condition
- Good
- inspected February 2024
- Type
- Stringer/Multi-beam or Girder
- Steel Continuous
- Length
- 410 ft
- 3 main spans
- Daily traffic
- 4,771
- 2023 count
- Owner
- State
- State Highway Agency
About this bridge
US 12 over Creek Twin Canyon is a steel continuous stringer/multi-beam or girder carrying US 12 over Creek Twin Canyon in Lewis County, Washington. It was built in 1967, so it is 58 years old, older than the Washington average of 49.8 years.
The most recent inspection reported to the Federal Highway Administration rates it in good condition with a lowest component rating of 7 out of 9. All primary components (deck, superstructure, substructure, or culvert) are rated 7 or higher. No significant problems were noted.
It carries about 4,771 vehicles a day, roughly 22% of them trucks, projected to reach 5,801 by 2039. The structure is 410 ft (125 m) long and 33 ft wide. If it were closed, the detour would be 19.9 mi (32 km).
Location
Open in Google MapsCondition and inspection
All primary components (deck, superstructure, substructure, or culvert) are rated 7 or higher. No significant problems were noted.
| Component | Rating | Meaning |
|---|---|---|
| Deck | 7 Good | Some minor problems. |
| Superstructure | 7 Good | Some minor problems. |
| Substructure | 7 Good | Some minor problems. |
| Channel and channel protection | 8 Very Good | No problems noted. |
Structure
Traffic and service
Ownership and planned work
Frequently asked questions
When was US 12 over Creek Twin Canyon built?
It was built in 1967, making it 58 years old in 2025.
What condition is US 12 over Creek Twin Canyon in?
The National Bridge Inventory rates it in good condition. All primary components (deck, superstructure, substructure, or culvert) are rated 7 or higher. No significant problems were noted. The last reported inspection was in February 2024.
How much traffic does US 12 over Creek Twin Canyon carry?
About 4,771 vehicles per day (2023 count), of which roughly 22% are trucks.
How long is US 12 over Creek Twin Canyon?
The structure is 410 ft (125 m) long with a longest span of 162 ft (49.4 m) and a deck 33 ft wide.
Who owns US 12 over Creek Twin Canyon?
It is owned by the State Highway Agency.